Who knew controlling X10 via an Arduino was so easy? If you are interested in home automation and want to add some unique, or custom, sensors check out this website.
My current project revolves around using the Arduino and the X10 home automation protocol and hardware. The gist of what I am doing with this project is using the Parallax RFID tag to identify me and then use X10 protocol/hardware (Part# 1134B from SmartHomes via Amazon) to automate my home.
Read more about X10 Home Automation with Arduino
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